Originally Posted by hektikwon

If you have an auto, you will need to mod it or swap in a manual tranny (like me). You can also get the 3.4 tranny but that will require a different xfer case and adapter for 4x4.
Gas mileage will improve.
Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc.
Do a search for the swap and you should get some links.
This is my 1st ever swap and I have put almost 10k on it with no problems.